/**
 * Copyright (c) 2013-2014 Tomas Dzetkulic
 * Copyright (c) 2013-2014 Pavol Rusnak
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "secp256k1.h"

#include <string.h>

#include "curves.h"

const ecdsa_curve secp256k1 = {
    /* .prime */ {
        /*.val =*/{0x3ffffc2f, 0x3ffffffb, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0xffff}},

    /* G */ {/*.x =*/{/*.val =*/{0x16f81798, 0x27ca056c, 0x1ce28d95, 0x26ff36cb, 0x70b0702, 0x18a573a, 0xbbac55a, 0x199fbe77, 0x79be}},
        /*.y =*/{/*.val =*/{0x3b10d4b8, 0x311f423f, 0x28554199, 0x5ed1229, 0x1108a8fd, 0x13eff038, 0x3c4655da, 0x369dc9a8, 0x483a}}},

    /* order */ {/*.val =*/{0x10364141, 0x3f497a33, 0x348a03bb, 0x2bb739ab, 0x3ffffeba, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0xffff}},

    /* order_half */ {/*.val =*/{0x281b20a0, 0x3fa4bd19, 0x3a4501dd, 0x15db9cd5, 0x3fffff5d, 0x3fffffff, 0x3fffffff, 0x3fffffff, 0x7fff}},

    /* a */ 0,

    /* b */ {/*.val =*/{7}}

#if USE_PRECOMPUTED_CP
    ,
    /* cp */ {
#include "secp256k1.table"
    }
#endif
};

const curve_info secp256k1_info = {
    .bip32_name = "Bitcoin seed",
    .params = &secp256k1,
    .hasher_type = HASHER_SHA2,
};

/*
const curve_info ed25519_info = {
    .bip32_name = "ed25519 seed",
    .params = NULL,
    .hasher_type = HASHER_SHA2,
};

const curve_info ed25519_sha3_info = {
    .bip32_name = "ed25519-sha3 seed",
    .params = NULL,
    .hasher_type = HASHER_SHA2,
};

const curve_info curve25519_info = {
    .bip32_name = "curve25519 seed",
    .params = NULL,
    .hasher_type = HASHER_SHA2,
};
*/


const curve_info* get_curve_by_name(const char* curve_name)
{
    if (curve_name == 0) {
        return 0;
    }
    if (strcmp(curve_name, SECP256K1_NAME) == 0) {
        return &secp256k1_info;
    }

    /*
    if (strcmp(curve_name, ED25519_NAME) == 0) {
        return &ed25519_info;
    }
    if (strcmp(curve_name, ED25519_SHA3_NAME) == 0) {
        return &ed25519_sha3_info;
    }
    if (strcmp(curve_name, CURVE25519_NAME) == 0) {
        return &curve25519_info;
    }
    */

    return 0;
}
